You can find waves just about everywhere you look! Take a tour of the world of waves in this fun, illustrated introduction to the concept of waves and energy.--.
". . . explore the definition of matter and the different states of matter, plus the stuff in our world that isn't matter, such as sound and light"--Back cover.
An introduction to forces including gravity, magnetism, pulling and pushing forces, and friction that shows how forces affect the way we move on Earth.
